The Hidden Purpose of the Tiny Hole in a Safety Pin—and Why It’s a Brilliant Design
Have you ever noticed the tiny opening near the clasp of a safety pin and wondered why it is there? It may look like a minor detail, but the design of a safety pin is a clever example of how a small piece of metal can perform several jobs at once.
- It Helps Form the Spring Mechanism
A safety pin is made from a single piece of metal wire bent into a loop.
Discover
